I'm not sure what this means in Mozart's K 545 but it is that same movement in which the left hand is almost 100% Alberti bass, that is the second movement.
I see twice a passage of 8 16th notes marked with staccato and a slur. I have listened to it and I can hear a clear separation between notes in that passage just like I would with staccato. But I also see a legato marking(implicit in my case but I have seen it explicitly put in by editors) for the whole movement. In other words if I don't see a slur or a staccato, especially if it is in the left hand, it is still legato.
So what does this mean when I have a passage marked both legato and staccato? Does this mean that I should play legato but with clear separation like what I hear(so in other words smoothly transition from 1 staccato to the next)? Or does this mean portato or mezzo-staccato(which essentially is just nonlegato because that is what is in between legato and staccato)?